Bowflex Heart Rate Armband lets you monitor your heart rate while you train. It is simple comfortable armband. Professional-quality Bluetooth® LE (BLE) heart rate device equipped with an optics sensor that monitors your heart rate. This device transmits the real-time heart rate data through a Bluetooth® connection to a heart rate receiving device or App. This Bowflex heart Rate Armband will help you manage your fitness level and exercise routine. Rechargeable battery provides 20 hours of use. It also features Velcro strap for secure fastening and water resistance: IP67 (can withstand immersion in 1 meter of water for 30 minutes).Access your data from console or compatible apps.